3,5-Dichlorobenzonitrile (6575-00-4) is also named as NSC109596 ; CID81052 ; EINECS 229-495-3 ; ZINC00159427 ; CD07878 ; AI3-34463 ; TL8004663 ; Benzonitrile, 3,5-dichloro- ; 3,5-Dichlorobenzenecarbonitrile ; 3,5-Dichlorobenzonitrile,97% ,and so on. 3,5-Dichlorobenzonitrile (6575-00-4) is white to light yellow crystal powder.

IUPAC Name: 3,5-Dichlorobenzonitrile
CAS: 6575-00-4
Molecular Formula: C₇H₃Cl₂N
Molecular Weight: 172.01
Molecualr structure:
EINECS: 229-495-3
Melting point:  64-66 °C(lit.)
BRN:  2207019
ACD/LogD (pH 5.5): 3.06 
ACD/LogD (pH 7.4): 3.06 
ACD/BCF (pH 5.5): 124.08 
ACD/BCF (pH 7.4): 124.08 
ACD/KOC (pH 5.5): 1097.18 
ACD/KOC (pH 7.4): 1097.18 
H bond acceptors: 1 
H bond donors: 0 
Freely Rotating Bonds: 0 
Index of Refraction: 1.583 
Molar Refractivity: 40.97 cm³ 
Molar Volume: 122.4 cm³ 
Polarizability: 16.24 10^-24cm³ 
Surface Tension: 50.9 dyne/cm 
Density: 1.4 g/cm³ 
Flash Point: 85.8 °C 
Enthalpy of Vaporization: 45.98 kJ/mol 
Boiling Point: 223.3 °C at 760 mmHg 
Vapour Pressure: 0.0971 mmHg at 25°C 

 3,5-Dichlorobenzonitrile (6575-00-4) is commonly used as chemical reagent.

Hazard Codes:  Xn,T,Xi  
Risk Statements:  20/21/22-36/37/38 (20/21/22:  Harmful by inhalation, in contact with skin and if swallowed 36/37/38:  Irritating to eyes, respiratory system and skin)
Safety Statements:  26-37/39-36/37/39-22-36 (26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 37/39:  Wear suitable gloves and eye/face protection 36/37/39:  Wear suitable protective clothing, gloves and eye/face protection 22:  Do not breathe dust 36:  Wear suitable protective clothing)
RIDADR:  3276
WGK Germany:  3
Hazard Note:  Irritant/Toxic
HazardClass:  6.1
PackingGroup:  III

Removal in wastewater treatment of 3,5-Dichlorobenzonitrile (6575-00-4) can be stated as follows:
Total removal:6.11  percent
Total biodegradation:0.11  percent
Total sludge adsorption:4.32  percent
Total to Air:1.68  percent
(using 10000 hr Bio P,A,S)